| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2eb2f2fadb10c69a732e88f3c422a7e1 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B10-573 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B10-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B10-573 |
| filingDate |
1994-07-01^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1995-06-06^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dec9d6f69384cc8f95322754a03c59ab |
| publicationDate |
1995-06-06^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-5421425-A |
| titleOfInvention |
Cutting elements for rotary drill bits |
| abstract |
A cutting element for a rotary drill bit comprises a thin cutting table of polycrystalline diamond having a front cutting face and a rear surface bonded to a tungsten carbide substrate. The substrate incorporates one or more thin barrier layers which extend at least partly through the thickness of the substrate in a direction transverse to its front surface. Each barrier layer is formed of a material, such as nickel, which is more ductile than the material of the substrate, but is metallurgically compatible with it. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-102011113574-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6514289-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6800095-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6402787-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5950747-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6517583-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6793681-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5590729-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5967249-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6596225-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5787022-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6494918-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6709463-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6021859-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5617928-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6676704-B1 |
| priorityDate |
1993-07-07^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |